Lift pump



Aug. 13, 1935- a. BOHNENBLUST 2,011,210

I LIFT PUMP I Filed July 9, 1954 4 Z7 6 X5 Z4 ilnuzntur Patented Aug. 13, 1935 LIFTPUMP Ben BohnenblustiltileyjKans I Application July: 9,1 1934, Serial-No, 134,339

spl ens. (C 103-55 This invention aims to provide a novel pump,

in which the liquid is forced upwardly by the sliding movement of ac'up-likebarrel on. a piston carried by an outlet conduit.

The invention aims to provide novel means for supportingthebarrel for sliding movement, to. provide novel means for operating the barrel, to afford a novel connection betweenthe barrel specified and a lower piston, to improve the cylinder construction, and to im- The numeral I designates, generally, an outlet conduit; The outlet conduit I51comprises a straight tube I6, threaded into the central part of the partition, I0. The tube I6 extends upwardly above-the partitionl It; a little'way, into the hous ing 5. The tube lfifextendsjdownwardly a considerable distance into the, upper-member 3 of the cylinder. I;. The outlet conduit I5 comprises an elbow I'Ipthreaded on the upper end ofthe tube I6 'and'l abutting against thepartition I0;

Drove g al y and to enhance" the utility of; Theelbow lilrexte'nds laterally, out of thetubular 10 devices of that typet'o which the invention appere housing 5; Onthe lowerend of-the tube I 6 there tains. t r I 1 1 is a fixed. outstanding piston I8, of any suitable With the above and other objects in view, construction, it being: unnecessary to describe which will appearas the description proceeds, the piston in detailysaving to state that it is the invention resides in the combination and adapted to make a water-tight contact with the 1.5-

I arrangement ofparts and in the details of concup-shaped barrel 22, to be described hereinstruction hereinafter described and claimed, it after. In thelower', end of" the tube I6 there is being understood that changes'in the precise a valve seat I9. 1 A stop? is mounted in the embodiment of the invention herein disclosed, tube I6; above the valve se'at I9. A check valve 20 maybe made within the scope of what is claimed, 21: operates in the tube: I6 between the stop 20 2 W ut departing from Spi it of the invenand the seat IQ -and'is adapted to open and. close tion. g g the seat; The check valve 2Ii is shown in the Irrthe ac p ny d aw g: form-of a ballg but it mightibecmade otherwise. Fig. 1 shows in longitudinal section, a device The cup-shaped upper barrel 22, hereinbefore 25 constructed in accordance with the invention, mentioned, preferably is of cylindrical form 25 some parts being in elevation; throughout the major portion of its length. It

2 is a transverse Sect 011 t ine is adapted to slide up and down upon the periphof Fig. 1. ery of the piston I8 that is carried by the tube I6.

In in out the inv ntion, here is pro- The barrel 22 slides, also, on the inwardly provided a cylinder, which, as a whole, is designated jecting longitudinal guides or ribs I2 of the upper 30 by the numeral I. The cylinder I comprises a member 3 of the cylinder I, as Fig. 2 will show. lower member 2 and an upper member 3. The The operating members for the upper barrel 22 m s 2 d 3 of h y d I a e unit d by maybe rods 23, located between certain of the a coupling 4. A tubular housing 5 is disposed ribs or guides I2, and secured at their lower ends 5 above the upper cylinder member 3. The housto the upper portion of the barrel 22. The rods 23 in 5 i surm d y a p pl At i pass slidably through the partition I0 and the cap pp the housing has an Outstanding plate 6. The upper ends of the rods 23 are secured flange l. Securing elements 8, such as bolts, detachably, as shown at 24, to a transverse yoke connect the an p a 6 t the flange I of the bar 25. An actuating rod 26 is secured at its 40 housing 5. At its lower end the housing 5 has lower end, as shown at 21, to the intermediate 40 an outstanding flange 9, and there is a similar portion of the yoke bar 25. flange on the upper end of the upper member 3 The cup-shaped upper barrel 22 has a tapered 0f t e Cylinder A partition is d sposed belower end 28 terminating in a central nipple 29. tween the flanges 9 and separates the interior of In the tapered lower end 28 of the barrel 22, above 7 the upper member 3 of the cylinder I from the the nipple 29, there are inlet ports 30. The 45 interior of the housing tapered lower end. 28 of the barrel 22 is provided Securing devices II, such as bolts, pass through with an internal valve seat 3|, located above the the flanges 9 and the partition III, the housing 5, ports 39. A check valve 32 controls the passage I the partition IE3 and the upper member 3 of the of liquid through the opening of the valve seat cylinder thus being held together rigidly. Longi- 3|. The check valve 32 closes downwardly. In 50 tudinal guides I2, in the form of ribs, are located the drawing, it is shown hinged at 33 to the part I within the upper member 3 of the cylinder I, 28 of the barrel 22. The check valve 32, however,

and are connected to that member by securing might be mounted otherwise. devices I4, such as cap. screws. The upper end of a stem 34 is threaded into the nipple 29 on the part 28 of the barrel 22. The 55 lower end of the stem 34 is connected at 35 to a lower piston 36, operating in the lower member 2 of the cylinder I. The lower piston 36 has upwardly opening check valves 31 of any desired construction.

The operation of the device is simple. On the downward movement of the rod 26, the yoke bar 25, the rods 23, the upper barrel 22, the stem 34 and the lower piston 36, the check valves 31 of the barrel 36 open, and the check valve 32 of the piston 22 opens. The liquid passes through the ports 39 of the barrel 22, into the barrel 22. On the upstroke, the valve 32 closes, and a quantity of liquid is trapped in the barrel 22, between the check valve 32 and the fixed piston I8 on the tube It of the outlet conduit l5. moves upwardly, and since the piston I8 is fixed, the liquid in the barrel 22 is forced upwardly through the outlet conduit IS, the check valve 2! opening to permit the upward and outward passage of the liquid through the conduit l5.

The device simplifies packing problems. It is easily assembled and taken down. The barrel 22 is doubly guided, because it slides on the ribs l2, and because the rods 23 slide in the partition l and in the cap 6, as well. The tapered lower end 28 of the barrel 22 facilitates the downward movement of the barrel, and causes the'water to enter rapidly through the ports 30. As to the final ejection of the water or other liquid through the conduit l5, that step in the operation does not depend upon a forcing action from the bottom of a well, but, rather, upon a combined lifting and forcing action taking place within the barrel 22.

Having thus described the invention, what is claimed is:

1. A pump comprising a. cylinder, a top closure for the cylinder, means for securing the top closure to the cylinder, an outlet conduit fixed in the top closure and extended downwardly into the cylinder, the conduit being, provided'at its lower end with a fixed piston, a cup-shaped barrel receiving the piston and slidable thereon, the barrel Since the barrel 22* having a curved outer surface, a downwardly closing check valve in the lower portion of the barrel, more than two solid ribs on the interior of the cylinder and having, each, a single continuous surface engaged directly with the curved outer surface of the barrel to hold the barrel centered in the cylinder without interfering with the axial rotation of the barrel in the assembly of the pump, and an operating member slidable in the top closure and guided therein, to prevent the barrel from rotating with respect to the cylinder, after the top closure has been secured to the cylinder by the first specified means, the lower end of the operating member being connected to the 7 upper portion of the barrel.

2. A pump comprising a cylinder, a tubular housing disposed above the cylinder, a partition located between the upper end of the cylinder and the lower end of the housing, a barrel mounted for reciprocation in the cylinder, a downwardly closing check valve in the lower portion of the barrel, means extended upwardly through the housing for imparting reciprocation to the barrel; an outlet conduit comprising an upper member fixedly mounted in a portion of the housing, and a lower member detachably connected to the partition and to the upper member of the conduit, a piston on the lower member, the barrel being slidably mounted on the piston, a downwardly closing check valve controlling the conduit, and means for securing the housing, the cylinder and the partition detachably together.

3; A pump comprising a cylinder, an outlet conduit fixed in the cylinder and provided at its lower end with a fixed piston, a cup-shaped barrel receiving the piston and slidable thereon, a downwardly closing check valve in the lower portion of the barrel, means for reciprocating the barrel, a lower piston slidable in the cylinder, below the barrel, and a connection between the lower piston and the barrel, and a downwardly closing check Valve carried by the lower piston.

BEN BOHNENBLUST. 

